Torch burner



July 17, lr923 l 1,461,897

' o. J. GROEHN TORCH- BURNER 4 Filed Oct. 2. 1920 ame/wkn -Ofto d.' Groen Patented July l?, i923.

stares nur lorica.

orroa. eaonHN, or nnraorr, MICHIGAN; Assrenon 'ro CLAYTON AND LAMBERT MANUFACTURING corarANY, or nnraorr, MICHIGAN, A CORPORATION orIvrIcHr;

GAN.

TORCH BURNER.

Application filed Gctober 2, 15320.` Serial No. 414,257.

To aZZ iii/"wm it may oon/cern: i

Be it known that I, Ofr'ro J. Gironi-IN, a citizen of the United States of America, rcsiding at Detroit, inthe county of Vayne and State of Michigan, have invented certain new and useful Improvements in Torch Burners, of which the following is a specifi-` cation, reference being had therein te the accompanying drawings.

This in vention relates to oil burners or the like and refers more particularly to that class of burners used in connectionwith blow torches or like tools. It isone of the objects of the invention` to provide `a con struction in which the burner is prevented from clogging or more particularly to provide a means for cleaning the discharge nozzle of the burner so that it can be readily maintained in operative condition. Another .important feature of the invention is to provide a cleaning needle or like memberwhich is not only attached to the tool and readily available foriise but which is so constructed and arranged that `the user cannot .force the the discharge orifice. I

The invention also contemplates a novel combination wherein the valve which con trols the supply to the discharge orifice is located. at a point distant from the discharge orifice; the cleaning needle being used solely for cleaning the discharge orifice and preferably so constructed that it cannot perform the function of the valve. `Still another obright angles to Figure l on the line 3-3 of v Describing in detail the invention as applied to a blow torchg A desi gnates the burner of a blow torch which comprises in addition to the burner the supply tank B having the cleaning needle in such a way as to injureA ject of the invention is to provide an im-` standard B connecting the burner to the tank and a suitable pump B2 forI forcing the liquid fuel through the inlet C of the chamber to the vaporizing chamber C. This latter chamber is preferably cast integral `and located adjacent to the combustion chamber D so that the heat radiated from the combustion chamber D through thewall D will toA heat the fuel inthe vaporizing chamber C thus assisting in vaporizing it.. Also if desired. suitable iinewire mesh screen or other filtering material C2 is employed forboth assisting in vaporizing the fuel and filtering the same `to keep the free carbon removed therefroni. Vithin the vaporizing` chamber C" there is located a fuel passage-way E which is tapered at itsinlet E and at its opposite en d is provided with a valve port F controlled by `a suitable valve such as the needle valve F. It will be noticed that this tube E which forms a fuel passage-way is offset at G so thatits upper wall G lies substantially adjacent the lower wall Diof the combustion chamber D. This is an impor-k tant feature in that the fuel being vaporized in the chamber C is compelled to pass through the tube E directly adjacent to the hot wall of the combustion chamber and thereby being. subjected to a greatly increased vaporizing effect. After passing through the port F the vaporized fuel passes upward through the vertical passageway Hv to the discharge orifice H. `This last-mentioned orifice is preferably cylindrical in shape and is formed in a removable fitting I which is screwthreadcd at I into the burner fitting Extending in axial alignment with this orifice, but in theiopposite direction, is a threaded nipple portion J through which the stem J2 of the eleanout needle J is threaded. This needle is operated by a separate hand wheel J3 on the outer end of the stein J2.

After passing through the discharge orilice H the fuel mixed with a suitable quantity of air is burned wit-hin the combustion vchamber D and heretofore great difficulty has been encountered in maintaining the proper relation between the discharge oriiice and the burner owing to the fact that a valve mechanism seating with the discharge orifice would be jammed into the latter while itis hot thus distorting the seat and in many cases enlarging the discharge orifice. Moreover great difficulty has been encountered in maintaining a valve at this point owing` to the extreme heat at this portion of the burner. In the present construction these disadvantages are avoided by not only locating the shut-off valveat al point in the passageivay somewhat remote from the discharge oriiice but also by arranging the cleanout needle J so that i't cannot perform the function of the valve. For this purpose there is provided an abutment or stop which will prevent the end li of the steam J2 from being'forced into contact with themetal surrounding the discharge orifice H. Iny the particular construction shown thisstop or abut-ment is formed by terminating the Ithreads JAx on the stem J2" a sufficient distance from the hand wheel il that the forward movement of the needle J vvill be terminated by' the shoulder portion L striking against the metal ofthe interiorly threaded portion L beforeA the end'K reach the metal portion surrounding the oriiire Hf The proportioning vof parts, however, is such that the needle J Willbe projected entirely lthrough 'thedischarge orifice Hand this needle is preferably of the same crosssectioiial area as the interior of the discharge orifice H. vAlso being' in axial alignment With such passage-Way the side Walls of the cleanout needle will be in all positions of adjustment substantially parallel to the side Walls of the discharge orifice H thereby preventing any pressure being exerted upon the metal 'surrounding the discharge oriiice. The invention in its broader aspects is not limited to the cleanout needle J being of the same or cross section as the discharge orifice of the burner, but I consider it of great importance that the cleaiiout needle should be arranged to be incapable of use as a valve and that the mechanism be so arranged that the user cannot jam or force the cleanout needle or its associated mechanism in contact with the metal surrounding the discharge orifice in such a Way as to injurefor alter the latter.

A torch having a burner construction `as above described is capable of use as both a gasoline or. rerosene torch or for other types of vaporizing fuel and disarrangement of the torch due to clogging by carbon is avoided in that the operator at all times has in convenient position for use the cleanout c needlefwhich can be instantlyI moved to clraning position and then retracted. lvloreover this needle is entirely independent of the shut-off or control valve. l do not, honk ever, desire to limit the invention to the particular details of construction shown and described except as ultimately set forth in the claim. y That l claim as my invention is:

@lin a blow pipe torchfor developing intense heat, a flame tube having an open forward end, a'vapor discharge nozzle at the rear end of said tube and having a discharge port substantially in alignment with the axis of the flame'tube for discharging fuel into said flame tube to mix with air and burnin sai d tube, an interiorly threaded portion disposed in rear of said nozzle, a stein extending` through said threaded portion and adjustable toward and from said discharge port, said stem and threaded portion being in alignment with the axis of said discharge port, said stem being adapted 'to be withA drawn from said threaded portion, a cleanout member carried by said steml and adjustable toward 'and from said discharge port, a vaporizing passageleading from a source of supply of fuel to the 'portof said discharge nozzle, a valve for controlling` the supply of fuel to said vaporizing passage located at a position remote to said discharge nozzle, said valve having a stein provided with an adjustment for positively forcing the valve to itsclosed position so as to control the supply of fuel to the discharge nozzle independent of the cleanou't member, and means for limiting the forward movement of said cleanout member so as to prevent tlie latter from being forced into contact with the metal surrounding Ithe orifice of the discharge nozzle.

In testimony whereof I affix my signature.

orro J. enornn; 

